Centrifugal machine for feeding gas-retorts.



I C. EITLE. GENTRIFUGAL MACHINE FOR FEEDING GAS RETORTS. APPLICATION FILED MAY15, 1905.

906,785. Patented Dec. 15, 1908.

9C 2 SHEETS-SHEET 1.

F I I A I? 1 C i c o I m h a c G l l 1 G. EITLE.

GENTRIFUGAL MACHINE FOR FEEDING GAS RETORTS.

APPLICATION FILED MAY 15, 1905.

906,785. 7 Patented Dec.15,l908l 2 SHEETS-SHEET 2.

CHRISTIAN EITLE, OF STUTTGART, GERMANY.

CENTRIFUGAL MACHINE FOR FEEDING'GAS-RETORTS.

Application filed May 15,

more particularly intendedrfor feeding coal to horizontal retorts of any suitable length, and

of suitable cross section, while the essence of my invention consists in the spinning up to a high speed of a fly-wheel, the shaft of which .carries'fan blades which. feed'the material to the retort, so that the power stored in the 0 H -wheel is gradually consumed during the charging of the retorts.

Said invention is fully shown and described in the following specification of which the accompanying drawin s form a part, wherein similar letters of re erence desi nate like or equivalent parts wherever ound throughout the several views and in which: Figure 1 is a side-view in central section of my improved feeding apparatus showin the same in position a ainst the'mouth of a orizontal as retort; l

of on t e line acca of Fig. 1; Fig. 3 is a sectional view in detail of a three bladed-centrifugal fan used in such apparatus Fig. 4 is a like View of a four bladed fan used for different material; Fig. 5 is a side and Fig.6 a top view of the regulating spring and actuating handwheel by which the speed of the fan is regulated; and Figs. 7, 8 and 9 are views from various points of portions of the feeding chute at the delivery end thereof.

The device consists of a hollow drum (1 with a suitable fan or blade d mounted upon a shaft I) driven by an electric motor (3.

a friction wheel or disk 0 which is pressed against the periphery of the fly-wheel c by means of a spring (1, the tension of which is Specification of Letters lfatent.

ig. 2 is an end view there The shaft of said electric motor, is provided with- T charge in Patented Dec. 15, 1908.- 1905. Serial No. 260,409.

a suitable carriage A,"usually of the form shown which rolls inward and outward upon a raihcarriage B, which in turn runs along in front of the retorts upon a suitable overhead railway C. The carriage is reciprocated in any desired manner, and the centrifugal feeding fan, etc. is raised and lowered by any suitable mechanism, usually by the chaingear D shown in Fig. 1.

Above' the drum a and to the rear of the center thereof is located the feed-hopper g from which the granularmaterial to be fed is dropped down over the deflectors 0. into the side chambers f of the drum a; .these chain..- bers f have the inwardly curved bottom por tions as shown at f-in Fig. 2,- and such curved bottoms direct by gravity the annular malerialinto the central fan.oha1nber, so that the blades of the rapidly revolvingfan will throw the material by centrifugal force forward through the fan chut into the ejection nozzle *5 and thence into the retort'G.

As will be hereinafter referred to the fly? wheel of the. fan shaft is spun up to the' a proper speed .to fill the particular retort to whichthe apparatus is attached, and may then be disconnected and will gradually lose ping at thetime the retort is charged to t e end that is the principle I prefer to use is that of the spin-wheel motor, although if deev'ent regulated by manipulation of. the hand-wheel m.

The coal or other granular material to be fed is of course slowly fed to the fan, so that one granule in its travel will not interfere with another and thus it will be seen that the material is not forced in a mass to the retort as is usuallythe case.

The spring (I which is intended for the regulation of the pressure of the friction .disk against the fly wheel, is threaded at itsfree end and is provided with a hand wheel m, which serves as a nut, and also with agrad'uatcd scale, by means of which the pressure in forcing .the friction ,disk against the fly 1 wheel may, be exactly controlled. l The lengths of the retorts at present in use, i vary between 3 meters (about 9 feet 10 its speed as the retort is filled, the fan sto sired the motormay be in contact with the fly-wheel at alltimes, but its power is in any 1 inches) and (3 meters (about 19 feetS inches),

{ the sliape and size of the cross section of theretorts dill' or also, so that the amoumv of also dillerent. The height of the charge,

proportion to the unit 01 length is that is to say the amount of the charge is means of the adjustable spring and on the levelof the ejection nozzle in relation to the retort, a greater charge requiring a greater ressure of the frictiondisk and a higher evel of the ejectment nozzle; the length of throw is dependent upon the corresponding speed of the centrifugal Wings or blades, a larger throw requiring also a eater speed of the throwing device, and a so upon the selection of a corresponding number of wings or blades, the number of blades'ibeingl reduced in the case of larger lengths 'of throw and in the case of greater speeds"; it'has been found, that for retorts of 9 feet 10 inches, length 2 blades, and for r'etorts ofl l feet 9' inches length, 3 blades and for retorts'jof 19 feet 8 inches length 4 blades'are most suit- .able for producing the desired result.

The momentum imparted to the fly wheel before the feeding is started, is consumed during the feeding operation, the latter taking place, so as to begin from the extreme end of the retort,'so as to start from the bottom of the same and the speed of the centrifugal or throwing wings decreasing also proportionally, while the feeding of the retorts is continued. A

By the slantingly arranged passages or channels ff which serve for the feeding of the coal from the receptacle to the throwing or centrifugal wings and which are connected to the lower part of the centrifugal drum, the effect is produced, of imparting a uniform speed to the material upon its way through t e passages in consequence of the change of direction to which the material is submitted, so that, the material is fed in uniform quantities through the said passages and is admitted at both sides of the centrifugal wings at their periphery, An additional regulation of the coal fed is furthermore also produced by the fact, that in the case of the employment of less than four wings or blades,

that is to say when retorts of more than 9 feet 10 inches length are to be charged, the blades or wings are provided with sector shaped side walls n n of corresponding size, by which means the admission of coal on both sides from the channels or passages may be checked more or less for a certain time.

The displaceable front part 'i of the ejection nozzle which is provided with a cover, produces the result of being able to close the retort during the charging operation, so as to avoid the carrying along of cold air and also to revent the escape of gases.

The coal admitted through the channels provided at both'sides, which during the throw in consequence of the direction, originally'imparted to it, has the tendency of sliding towards the center line, is divided again by the partition Z, which is mounted in the value for obtaining a satisfactory andadvantageous gasific'ation.

The most essential feature of the invention resides in the employment of four, three and two wings or blades, the latter two of which are provided with sector shaped side walls of corresponding size with the different usual lengths of the retorts, in combinationwith the regulation of the force of pressure of the friction disk of the motor engine or of any other drivin member against the fly wheel of the wings-s aft suitable for the ac'cumula tion of large driving forces, and also in combination with inclined channels or passages of varyin direction and arranged on both sides for t e purpose of the admission of the material, and in combination with the e ection nozzle provided with cover and partition for the closing of the retorts and for the pur-' pose of the iling up of the material in the interior of t e retorts .on both sides of the same, by which means retorts of any length and of any level of charge may be fed uni tional mechanical arrangements that would require special driving means.

What I claim and desire to secure by Letters Patent of the United States is 1-. In a device of the class described, a ro tating feeder for directing a stream of material by centrifugal force into a receptacle, a

motor, mechanism connecting the motor and the rotating feeder, means for disconnecting the motor and the rotating feeder without stopping the rotation, and means for deflecting the stream of material in a horizontal plane toward the-side walls of the receptacle.

2. In a deviceof the class described, a shaft, a fly-wheel carried by the shaft, a motor, a fan or bladed centrifugal feeder mounted upon the shaft, and means for disconnecting themotor from the shaft and fiy-wheel without stopping their rotation.

3. In a device of the class described, a shaft, a fly-wheel carried by the shaft, a 1no tor, a fan or bladed centrifugal feeder mounted upon the shaft, means for disconnecting the motor from the shaft and fly-wheel without stopping their rotation, and means for feeding material to the fan at both sides by gravity.

4. In a device of the class described, a fanehamber, a hopper in communication with the fan-chamber at the bottom and rear, a bladed fan or centrifugal feeder rotating in the fan-chamber, an outlet to the fan-chamher at the bottom and front thereof, a de- In witness whereofIhaVe hereunto set my flector in such outlet for directin the metehand in presence of two witnesses.

rial, a fiy-wheel mounted on the %anshaft, a v his motor in frictional contact with the fly- CHRISTIAN EITLE, 5 wheel, and means for regulating the fricmark tional pressure between such motor and fly- Witnesses:

wheel and for disconnecting them without MARIE EI'rLE,

stoppage of rotation. 4 ERNST ENTENMAN. 

